* {
  margin: 0;
  padding: 0;
}

html {
  height: 100%;
}

body {
  height: 100%;
  background: #fff url(../img/3.jpg) 50% 50% no-repeat;
  background-size: cover;
}

.dowebok {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 430px;
  height: 400px;
  margin: -300px 0 0 -215px;
  border: 1px solid #fff;
  border-radius: 20px;
  overflow: hidden;
  background-color: rgba(0, 0, 0, .5);
  padding-top: 60px;
}

.logo {
  width: 104px;
  height: 104px;
  margin: 50px auto 80px;
  background: url(../images/login.png) 0 0 no-repeat;
}

.form-item {
  position: relative;
  width: 360px;
  margin: 0 auto;
  padding-bottom: 30px;
}

.form-item input {
  width: 288px;
  height: 48px;
  padding-left: 70px;
  border: 1px solid #fff;
  border-radius: 25px;
  font-size: 18px;
  color: #fff;
  background-color: transparent;
  outline: none;
}

.form-item button {
  width: 100px;
  height: 50px;
  border: 0;
  font-size: 18px;
  color: #1f6f4a;
  border-radius: 10px;
  outline: none;
  cursor: pointer;
  background-color: #fff;
}
.btn .form-item {
  text-align: center;
}
.btn {
  display: flex;
}
.btn .btn1 {
  color: white;
  background-color: #000;
}
.btn .btn2 {
  color: #333;
  background-color: white;
}
#username {
  background: url(../images/emil.png) 20px 14px no-repeat;
}

.password {
  background: url(../images/password.png) 23px 11px no-repeat;
}

.tip {
  display: none;
  position: absolute;
  left: 20px;
  top: 52px;
  font-size: 14px;
  color: #f50;
}

.reg-bar {
  width: 360px;
  margin: 20px auto 0;
  font-size: 14px;
  overflow: hidden;
}

.reg-bar a {
  color: #fff;
  text-decoration: none;
}

.reg-bar a:hover {
  text-decoration: underline;
}

.reg-bar .reg {
  float: left;
}

.reg-bar .forget {
  float: right;
}

.dowebok ::-webkit-input-placeholder {
  font-size: 18px;
  line-height: 1.4;
  color: #fff;
}

.dowebok :-moz-placeholder {
  font-size: 18px;
  line-height: 1.4;
  color: #fff;
}

.dowebok ::-moz-placeholder {
  font-size: 18px;
  line-height: 1.4;
  color: #fff;
}

.dowebok :-ms-input-placeholder {
  font-size: 18px;
  line-height: 1.4;
  color: #fff;
}